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Abundance and diversity of soil arthropods in olive grove ecosystem (Portugal): effect of pitfall trap type IPB - Escola Superior Agrária
Santos, Sónia A.P.; Cabanas, J.E.; Pereira, J.A..
Soil arthropod biodiversity is an indicator of soil quality and can be studied using pitfall trapping. In this research, olive grove edaphic fauna was assessed at different sampling dates by comparing two different diameters (7 and 9 cm) and three different contents (empty, water and preservative) of pitfall traps in order to determine which type of pitfall trap is more efficient. Considering all pitfall trap types and sampling times, a total of 12,937 individual edaphic arthropods belonging to 11 taxa were recovered. Smaller traps with preservative collected significantly more individuals than the other pitfalls tested. Larger and empty traps collected significantly more spiders and traps with preservative collected more beetles. Smaller and empty traps...
Tipo: Book Palavras-chave: Epigeic arthropods; Olive grove; Trap type; Diversity; Formicidae.
Ano: 2007 URL: http://hdl.handle.net/10198/751
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Effects of no tillage on the abundance and diversity of soil and olive tree canopy arthropods. IPB - Escola Superior Agrária
Lousão, C.; Bento, Albino; Campos, M.; Ruano, F.; Pereira, J.A..
Soil tillage is a traditional practice in the olive groves of Trás-os-Montes region (Northeast of Portugal) where the soil is maintained without any vegetal cover. However, this agronomic practice may have dangerous environmental effects of several orders. In this way, with the present work we aimed to contribute for the knowledge about the effect of two soil management practices in the olive grove (traditional tillage in comparison to no tillage) on the arthropods abundance and diversity of the olive grove soil and the olive tree canopy with special reference to Formicidae family. The work was developed between April and October of 2004, in two continuous plots submitted to the following agronomical practices: one plot submitted to frequent tillage to...
Tipo: ConferenceObject Palavras-chave: Olive grove; Tillage; Arthropods; Abundance; Diversity; Formicidae.
Ano: 2007 URL: http://hdl.handle.net/10198/5377
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Evaluacion comparativa multifuncional de sistemas agrarios mediante AHP: aplicacion al olivar ecologico, integrado y convencional en Andalucía AgEcon
Lopez, Carlos Parra; Calatrava-Requena, Javier; Gimenez, Tomas De Haro.
Aunque el concepto de multifuncionalidad está plasmado, implícita o explícitamente, en el diseño de las políticas agrarias actuales, su consideración a la hora de analizar y evaluar sistemas agrarios es aún relativamente escasa en la literatura. Para tal fin se propone utilizar el Proceso Analítico Jerárquico (Analytic Hierarchy Process - AHP), técnica de decisión multicriterio discreta que se utiliza para la toma de decisiones complejas. La metodología AHP es expuesta junto con un procedimiento propuesto para medir el acuerdo relativo entre decisores y la uniformidad de las alternativas en la toma de decisiones en grupo. Finalmente, AHP es aplicado a la evaluación del olivar ecológico, integrado y convencional de Andalucía considerando criterios de...
Tipo: Journal Article Palavras-chave: Multifunctionality; Analytic Hierarchy Process; AHP; Multicriteria decision making; Group decision making; Relative agreement indices; Relative uniformity indices; Olive grove; Agricultural and Food Policy; Q01; C65; Q50.
Ano: 2005 URL: http://purl.umn.edu/28771
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